CONSISTENCY IS THE NEW LATENCY: AI AT THE DATA LAYER

Summary from the TLDR Dev newsletter

Agents that read stale data from lagging replicas build entire reasoning chains on wrong facts, and writing those errors back creates self-reinforcing "hallucination debt." Since LLMs treat retrieved data as current truth, making sure of contextual integrity is an architectural responsibility. AWS recommends matching each task to one of three replication patterns: strong global consistency (Aurora Global Database/DSQL) for high-stakes data, conditional writes on DynamoDB Global Tables for scalable shared memory, and high-velocity intake for rapid ingestion.